Home / 113,148.72-156,127.89-65,392.86

Finding the Fourth Proportional to 113,148.72, 156,127.89 and 65,392.86

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Solution

The fourth proportional to 113,148.72, 156,127.89 and 65,392.86 is: 90,232.12

Step by Step Solution

  1. Step 1: Write the proportion equation
    113,148.72 : 156,127.89 = 65,392.86 : x
  2. Step 2: Convert to fraction form
    113,148.72/156,127.89 = 65,392.86/x
  3. Step 3: Cross multiply
    113,148.72x = 156,127.89 × 65,392.86
  4. Step 4: Simplify right side
    113,148.72x = 10,209,649,252.87
  5. Step 5: Solve for x
    x = 10,209,649,252.87/113,148.72
  6. Step 6: Final answer
    x = 90,232.12

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Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.